Changeset 27701

Fixed another very subtle to do with the case of the TASK_HOME env var set in environment.pl used by envi when launched via run-gs2-diffcol.pl. It ends up being all lowercase by the time import.pl is run and archiveinf-doc is generated. This then ends up being sorted differently when db2txt -sort is run on it than if the title case of TASK_HOME had been preserved, as happens when task.pl is run directly (and TASK_HOME is taken as the current working dir at that point)